<template>
  <div class="list" ref="list">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">{{this.currentCity}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div class="button-wrapper" v-for="item in hot" :key="item.id" @click="handleCityClick(item.name)">
            <div class="button">{{item.name}}</div>
          </div>
        </div>
      </div>
      <div class="area" v-for="(item, key) in citys" :key="key" :ref="key">
        <div class="title border-topbottom">{{key}}</div>
        <div class="item-list">
          <div class="item border-bottom" v-for="innerItem in item" :key="innerItem.id" @click="handleCityClick(innerItem.name)">{{innerItem.name}}</div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
  import Bscroll from 'better-scroll'
  import {mapState, mapMutations} from 'vuex'

  export default {
    name: "CityList",
    props: {
      citys: Object,
      hot: Array,
      letter: String
    },
    mounted() {
      this.$nextTick(() => {
        this.scroll = new Bscroll(this.$refs.list, {})
      })
    },
    watch: {
      letter () {
        if (this.letter) {
          const element = this.$refs[this.letter][0];
          this.scroll.scrollToElement(element);
        }
      }
    },
    methods: {
      handleCityClick (city) {
        // this.$store.commit('changeCity', city);
        this.changeCity(city);
        this.$router.push('/');
      },
      ...mapMutations(['changeCity'])
    },
    computed: {
      ...mapState({
        currentCity: 'city'
      })
    }
  }
</script>

<style lang="stylus" scoped>
  @import "~@/assets/styles/varibles.styl";
  .border-topbottom
    &:before
      border-color #ccc
    &:after
      border-color #ccc

  .border-bottom
    &:before
      border-color #ccc

  .list
    position absolute
    top 1.78rem
    left 0
    bottom 0
    right 0
    overflow hidden
    .title
      line-height .54rem
      background #eee
      font-size .26rem
      padding-left .2rem
    .button-list
      padding .1rem .6rem .1rem .1rem
      overflow hidden
      .button-wrapper
        float left
        width 33%
        .button
          margin .1rem
          padding .1rem 0
          border-radius .06rem
          border .02rem solid #ccc
          text-align center
    .item-list
      .item
        line-height .76rem
        padding-left .2rem
</style>
